s4: dns: Correctly check for talloc failure.

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Autobuild-User(master): Volker Lendecke <vl@samba.org>
Autobuild-Date(master): Thu Jun 16 16:55:15 CEST 2016 on sn-devel-144

diff --git a/source4/dns_server/dns_crypto.c b/source4/dns_server/dns_crypto.c
index 607935733e0cb65087f6cf40b0b2186f9e33e6b3..dc375aeae28bb159082c46a0662bc3fe307817b4 100644 (file)
--- a/source4/dns_server/dns_crypto.c
+++ b/source4/dns_server/dns_crypto.c
@@ -153,6 +153,9 @@ WERROR dns_verify_tsig(struct dns_server *dns,
                 */
                state->key_name = talloc_strdup(state->mem_ctx,
                                                state->tsig->name);
+               if (state->key_name == NULL) {
+                       return WERR_NOMEM;
+               }
                state->tsig_error = DNS_RCODE_BADKEY;
                return DNS_ERR(NOTAUTH);
        }